A general catalogue of double stars within 121⁰ of the north pole (1906)
Burnham, S. W. (Sherburne Wesley), 1838-1921 · [Washington] Carnegie Institute of Washington · leaf 396
on ofthis uncertainty, the diagram, which is reproduced here, wasgiven, showing two ellipses giving periods respectively of 130and 300 years, which, so far as the measured positions wereconcerned, were practically identical. The same measuressince 1892 are added to this in smaller white circles. It… … tifi 0S 1% l:S 2% 2^5 SCALE 21785 which is now available. Each successive orbit will necessarilydiffer materially from the prior investigations, and it willprobably require the measures of a considerable part of thepresent century to reach a result which will be substantiallycorrect. So far two…
Stars · Double stars
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